Telephone-cord-take-up device



D. G. ROOS.

TELEPHONE CORD TAKE-UP DEVICE.

APPLICATION FILED IAN. l2. 1916.

Patented July 129 E921.

NETE@ STATES PATENT @FFTCEO DELMAR Gr. ROOS, 0F BRIDGEPORT, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN- MENTS. TO THE LOCOMOBILE COMPANY, OF BRIDGEPORT, CONNECTICUT, A

CORPORATION OF DELAWARE.

TELEPHONE-CORD-TAKE-UP DEVICE. v

Specification of Letters Patent. Pgmtgmtd July :H29 .31921.

Application filed January 12, 1916. Serial No. 71,783.

To (1.7/ Hwm if 22mg/ concern Be it known that I` DELMAR G. Roos, a. citizen of the United States, and a resident of Bridgeport` in the county of Fairfield and State of Connecticut. have invented an Improvement in Telephone-Cord-Take-Up Devices` of which the following description, in connection with the accompanying drawings, is a specification. like characters on the drawings representing like parts.

This invention relates to take-up devices for telephone cords and the like, and among other objects aims to provide a simple. compact and eHective device for use in automobiles.

The character ofthe invention may be best understood by reference to the following description of an illustrative embodiment thereof shown in the accompanying drawings, wherein,-

Figure 1 is a front elevation of the illustrative telephone cord take-up device shown herein as embodying the invention;

Fig. 2 is a vertical section through the device shown in Fig. l;

Fig, 3 is a. vertical section taken on line 3 3 of Fig. 2;

Fig. 4 is a perspective view of a pulleycarrying member to be referred to; and

Fig. 5 is a diagrammatic view showing a telephone transmitter and receiver, the cord take-up device, and an electrical circuit cooperating with said parts.

Referring to the drawing, the illustrative device shown therein as embodying the invention comprises a boX like casing having sides 1 connecting upper and lower heads 3 preferably of hard rubber or other insulation material. In the upper end of the casing is a pin 5 connecting said sides and serving as a shaft on which are mounted a set of pulleys 7 preferably of rubber or other insulation material. and spaced by washers 9.

Also mounted in the casing is a pulley block 11 (Fig. 4) comprising uprights 13 connected by a pin 15 serving as a shaft for receiving a set of pulleys 17 also preferably of insulation material and spaced by washers 19.

This pulley block is adapted to slide in the casing toward and from pulley-s 7 referred to. To guide the pulley block the sides 1 may be provided with longitudinal grooves 2l for receiving the pulley block uprights 13.

The upper and lower heads 3 of the casing are connected by rods or bolts 23 having nuts 2 5 at the upper ends thereof which may be tightened to secure the heads to said sides. The pulley block may have ears 27 (Figs-2 and 4) projecting therefrom provided with holes 29 for receiving the rods 23. Helical springs 3l (Fig. 2) encircle said rods and are confined between said upper head 3 and said ears and tend to thrust said pulley block toward the lower head 3.

A telephone cord 33 may be entered through a hole 35 in the upper head 3 and be anchored thereto by a pin 37 which binds a bight 39 in said cord in a recess 41 in said head communicating with said hole. The cord extends from said head downward around one of the lower pulleys 17, and thence upward around one of the upper pulleys 7. It is wound thence successively around the upper and lower pulleys and passes outward through a guide tube 43 in the upper head having a flaring mouth 45.

The telephone cord comprises a pair of wires a and b adapted to be connected to a transmitter 47 (Fig. 5) of usual construction. These wires are wound about the pulleys as described, and the wire a is connected to a battery 49 or other suitable source of electricity. The wire b is connected to a receiver 5l of usual construction which in turn is connected by a wire c to the battery 49.

The receiver 5l may be located in an automobile conveniently adjacent to the drivers seat. The transmitter may be mounted in the body of the car at any point conveniently accessible.

The telephone cord take-up device described is simple and compact in construction and may be mounted in and concealed by the upholstery.

Then it is desired to use the telephone, the transmitter is grasped and a substantial length of the cord is drawn out of the casing. In so doing the lower pulley block is drawn upward toward the stationary pulleys against the resistance of the springs 31. Then the transmitter is released the springs will automatically thrust the pulley block downward and take up the slack in the cord.

Three pulleys have been shown herein as mounted on each shaft, but it will be underv stood any number may be employed according to the length of cord required.

By my invention a simple and effective cord take-up device is provided in which the cord may readily pass over the pulleys into and out of the casing without likelihood of becoming tangled. The Wear on the cord is reduced to a minimum and hence the wires are not likely to become bare and produce short-circuiting. The forming of the pulleys and heads of insulation material, also contributes to this result. The long, helical lsprings tending to thrust the pulley block downward away from the fixed pulleys apply a substantially uniform tension or thrust on the pulley block throughout its movement. onsequently, the force tending to resist the withdrawal of the cord from the casing is substantially uniform throughout. The plurality of pulleys employed enables a long length of coil to be taken up in a very small, compact space.

Having described one illustrative embodiment of the invention without limiting the same thereto, what I claim as new and desire to secure by Letters Patent is:

l. A device for automatically withdrawing and compactly'storing the slack of a' telephone cord having a free end comprising a casing comprising sides, one or more pulleys mounted adjacent an end of said casing, a pulley block engaging the sides of said casing and arranged to slide thereon, a telephone cord trained over the pulleys and springs to space said block from the other pulleys.

2. A device for automatically withdrawing and compactly storing the Slack of a telephone cord having a free end comprising a casing comprising sides having longitudinal guides therein, one or more pulleys mounted adjacent an end of the casing, a pulley block mounted for longitudinal movement in said guides, a telephone cord trained over the pulleys and springs to space said vblock from the other pulleys.

3. A device for automatically Withdrawing and compactly storing the slack of a telephone cord having a free end compris- Iing a pair of end members, rods extending between the same, one or more pulleys mounted adjacent one end member, a pulleyl block arranged to slide along said rods, a telephone cord trained over the pulleys, and springs encircling said rods to space said block from said end member.

In testimony whereof, I have signed my name to this specification in presence of two subscribing witnesses.

DELMAR G. Roos.

Witnesses:

C. B. AMoRoUS, G. E. H UMPHREYS. 

